CA1040714A - Transmitting and reproducing system for a plurality of audio information signals - Google Patents

Transmitting and reproducing system for a plurality of audio information signals

Info

Publication number
CA1040714A
CA1040714A CA216,411A CA216411A CA1040714A CA 1040714 A CA1040714 A CA 1040714A CA 216411 A CA216411 A CA 216411A CA 1040714 A CA1040714 A CA 1040714A
Authority
CA
Canada
Prior art keywords
signal
signals
channel
stage
reproducing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA216,411A
Other languages
English (en)
French (fr)
Inventor
Takeshi Matsudaira
Shoichi Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of CA1040714A publication Critical patent/CA1040714A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • H04H20/89—Stereophonic broadcast systems using three or more audio channels, e.g. triphonic or quadraphonic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/006—Systems employing more than two channels, e.g. quadraphonic in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)
CA216,411A 1973-12-20 1974-12-19 Transmitting and reproducing system for a plurality of audio information signals Expired CA1040714A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48143326A JPS5093602A (de) 1973-12-20 1973-12-20

Publications (1)

Publication Number Publication Date
CA1040714A true CA1040714A (en) 1978-10-17

Family

ID=15336173

Family Applications (1)

Application Number Title Priority Date Filing Date
CA216,411A Expired CA1040714A (en) 1973-12-20 1974-12-19 Transmitting and reproducing system for a plurality of audio information signals

Country Status (7)

Country Link
US (1) US4006313A (de)
JP (1) JPS5093602A (de)
CA (1) CA1040714A (de)
DE (1) DE2459682A1 (de)
FR (1) FR2255770B1 (de)
GB (1) GB1454860A (de)
NL (1) NL7416529A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100622078B1 (ko) * 2005-11-21 2006-09-13 주식회사 솔리토닉스 초지향성 스피커 시스템 및 신호처리 방법

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE544453A (de) * 1955-01-17
US3311828A (en) * 1963-02-12 1967-03-28 Internat Microwave Corp Communication system, methods, and apparatus utilizing vestigial-sideband, suppressed-carrier p.c.m. signals
US3665345A (en) * 1969-07-21 1972-05-23 Dolby Laboratories Inc Compressors and expanders for noise reduction systems
US3869583A (en) * 1971-08-05 1975-03-04 Columbia Broadcasting Syst Inc Quadruphonic disc recording system utilizing single sideband modulation
US3761628A (en) * 1972-04-13 1973-09-25 Columbia Broadcasting Syst Inc Stereo-quadraphonic matrix system with matrix or discrete sound reproduction capability
US3735290A (en) * 1972-04-18 1973-05-22 Victor Company Of Japan Compressing and/or expanding system comprising fixed and variable frequency characteristic changing circuits

Also Published As

Publication number Publication date
FR2255770A1 (de) 1975-07-18
US4006313A (en) 1977-02-01
GB1454860A (en) 1976-11-03
FR2255770B1 (de) 1982-06-18
DE2459682A1 (de) 1975-07-03
JPS5093602A (de) 1975-07-25
NL7416529A (nl) 1975-06-24

Similar Documents

Publication Publication Date Title
US4602381A (en) Adaptive expanders for FM stereophonic broadcasting system utilizing companding of difference signal
US3943293A (en) Stereo sound reproducing apparatus with noise reduction
US4534054A (en) Signaling system for FM transmission systems
US3783192A (en) Decoder for use in matrix four-channel system
US3761628A (en) Stereo-quadraphonic matrix system with matrix or discrete sound reproduction capability
US4564867A (en) Video disc recording and reproducing device for video discs having recognition signal indicative of content of associated program signal
US4771464A (en) FM stereophonic broadcasting system utilizing simultaneous companding and modulation/demodulation
US3754099A (en) Four channel stereophonic broadcasting system
US3814858A (en) Multiplex system employing multiple quadrature subcarriers
ES8405228A1 (es) Un aparato registrador de senales de video y audio.
CA1040714A (en) Transmitting and reproducing system for a plurality of audio information signals
EP0107295B1 (de) Videoplatten-Aufzeichnungs- und Wiedergabesystem
US4115666A (en) Discrete 4-channel stereo recording and/or reproducing system compatible with matrix systems
US5602922A (en) Method and apparatus for processing an audio signal by surround modes
CA1153109A (en) Video disc player buck
US3163717A (en) Signal-processing apparatus utilizing variable threshold limiting means for an fm/fmmultiplex signal
US4204091A (en) Cancellation of interference distortions caused by intermodulation between FM signals on adjacent channels
JPH0417162A (ja) Ｖｔｒ
US3845245A (en) Encoding system for forming two-channel signals from a plurality of sound signals
US4282401A (en) System for transmission and reception of discrete four channel stereo
US4266093A (en) Compatible four channel radio broadcast and receiving system
JPH0318267B2 (de)
JPS6049987B2 (ja) Ｆｍ復調回路
US3170040A (en) Fm stereophonic multiplex receiver having automatic disabling means for the subcarrier channel
US4654707A (en) Method and apparatus for volume control of a BTSC multi-channel sound signal